Fin coil pipe heat exchange device

Abstract

The utility model discloses a finned coil pipe heat exchange device which comprises an outer coil pipe, an inner coil pipe is arranged in the outer coil pipe, radiating fins which are evenly distributed are fixed to the outer wall of the outer coil pipe and the outer wall of the inner coil pipe, a second connecting pipe is connected to the top of the inner coil pipe, and a first connecting pipe is connected to the top of the outer coil pipe. A connector is connected between the second connecting pipe and the first connecting pipe. The inner coil pipe is arranged in the outer coil pipe, and the outer coil pipe and the inner coil pipe are connected through the connector, so that the heat exchange area of the coil pipes with the same volume is enlarged, and the effect that the heat exchange performance of the fin coil pipe is better is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam boiler technical field, concretely relates to a finned coil heat exchange device. BACKGROUND

[0002] The heat exchange coil is an important component in the steam boiler, and the main role is to transfer heat, and the heat exchange coil absorbs the heat generated by the fuel combustion in the boiler, and transmits the heat to the water through heat exchange, so that the temperature of the water is increased, the heat exchange coil in the steam boiler is usually single spiral shape at present, and the heat exchange area is small under the same volume, and then the heat exchange performance is poor. UTILITY MODEL CONTENTS

[0003] The utility model discloses a finned coil heat exchange device to solve the above-mentioned shortcomings in the prior art.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A finned coil heat exchange device, including the outer coil pipe, the inside of outer coil pipe is provided with inner coil pipe, the outer wall of outer coil pipe and inner coil pipe all are fixed with the evenly distributed heat dissipation fin, the top of inner coil pipe is connected with connecting pipe no.

[0006] Further, the outer coil pipe and the inner coil pipe are spiral, and the bottom ends of the outer coil pipe and the inner coil pipe are respectively connected with the inlet pipe two and the inlet pipe one.

[0007] Further, the outer coil pipe and the inner coil pipe all include the main body pipe, and the heat dissipation fin is fixed on the outside of the main body pipe.

[0008] Further, the inner wall of the main body pipe is provided with a protective layer, and the cross section of the main body pipe is circular.

[0009] Further, the two sides of the heat dissipation fin are respectively provided with the welding ring one and the welding ring two, and the welding ring one and the welding ring two are located on the outer wall of the main body pipe.

[0010] Further, a heat dissipation gap is reserved between the adjacent two heat dissipation fins.

[0011] In the above technical scheme, the finned coil heat exchange device has the advantages that: the inner coil is arranged in the outer coil, and the outer coil and the inner coil are connected through the connecting head, so that the heat exchange area of the coil with the same volume is increased, and the finned coil heat exchange performance is better; the welding ring one and the welding ring two are continuous welding beads formed by high-power laser welding process, the welding bead is uniform and beautiful, the contact area of the welding part is large, the thermal resistance of the heat transfer between the main pipe and the heat dissipation fin is reduced, and the heat exchange efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0013] Fig. 1 The top view structural schematic diagram of the finned coil heat exchange device is provided.

[0014] Fig. 2 The front view structural schematic diagram of the finned coil heat exchange device is provided.

[0015] Fig. 3 The main pipe structural schematic diagram of the finned coil heat exchange device is provided.

[0016] Explanation of reference signs:

[0017] 1 outer coil, 2 inner coil, 3 connecting pipe one, 4 connecting pipe two, 5 connecting head, 6 inlet pipe one, 7 inlet pipe two, 8 heat dissipation fin, 9 welding ring one, 10 welding ring two, 11 protective layer, 12 heat dissipation gap, 13 main pipe. DETAILED DESCRIPTION

[0018] In order to make those skilled in the art better understand the technical scheme of the present application, the present application will be further described in detail with reference to the drawings.

[0019] As shown in Figs. 1-3 The finned coil heat exchange device provided by the embodiment of the present application comprises an outer coil 1, an inner coil 2 is arranged in the inner part of the outer coil 1, the outer wall of the outer coil 1 and the inner coil 2 is fixed with uniformly distributed heat dissipation fins 8, the top of the inner coil 2 is connected with a connecting pipe two 4, the top of the outer coil 1 is connected with a connecting pipe one 3, and a connecting head 5 is connected between the connecting pipe two 4 and the connecting pipe one 3.

[0020] Specifically, in the embodiment, the finned coil heat exchange device comprises an outer coil pipe 1, an inner coil pipe 2 arranged in the inner part of the outer coil pipe 1, and uniformly distributed heat dissipation fins 8 fixed to the outer walls of the outer coil pipe 1 and the inner coil pipe 2, wherein the heat dissipation fins 8, the outer coil pipe 1 and the inner coil pipe 2 are all made of aluminum alloy material with good heat conductivity, the heat dissipation fins 8 serve to heat the external water, the top of the inner coil pipe 2 is connected with a connecting pipe 4, the top of the outer coil pipe 1 is connected with a connecting pipe 1, and a connecting head 5 is arranged between the connecting pipe 4 and the connecting pipe 1 to make the outlets at the top of the outer coil pipe 1 and the inner coil pipe 2 converge at one point.

[0021] The finned coil heat exchange device has the advantages that the inner coil pipe 2 is arranged in the inner part of the outer coil pipe 1 and connected with the outer coil pipe 1 through the connecting head 5, so that the heat exchange area of the coil pipe with the same volume is increased, and the finned coil heat exchange device has better heat exchange performance.

[0022] In another embodiment of the utility model, the outer coil pipe 1 and the inner coil pipe 2 are both spiral, the bottom ends of the outer coil pipe 1 and the inner coil pipe 2 are respectively connected with an inlet pipe 7 and an inlet pipe 6, and hot air enters the inner parts of the outer coil pipe 1 and the inner coil pipe 2 from the inlet pipe 7 and the inlet pipe 6 respectively; the outer coil pipe 1 and the inner coil pipe 2 both comprise a main pipe 13, and the heat dissipation fins 8 are fixed to the outer part of the main pipe 13; the inner wall of the main pipe 13 is provided with a protective layer 11 formed by hot-dip galvanizing, so that the heat resistance of the inner wall of the main pipe 13 is improved, and the cross section of the main pipe 13 is circular; the two sides of the heat dissipation fins 8 are respectively provided with a welding ring 1 and a welding ring 2, the welding ring 1 and the welding ring 2 are located on the outer wall of the main pipe 13, and the welding ring 1 and the welding ring 2 are continuous welds formed by high-power laser welding process, so that the welds are uniform and beautiful, the contact area of the welded part is large, the thermal resistance of heat transfer between the main pipe 13 and the heat dissipation fins 8 is reduced, and the water can be effectively heated by the heat dissipation fins 8.

[0023] Working principle: the inner coil pipe 2 is arranged in the inner part of the outer coil pipe 1 and connected with the outer coil pipe 1 through the connecting head 5, so that the heat exchange area of the coil pipe with the same volume is increased, and the finned coil heat exchange device has better heat exchange performance; the welding ring 1 and the welding ring 2 are continuous welds formed by high-power laser welding process, so that the welds are uniform and beautiful, the contact area of the welded part is large, the thermal resistance of heat transfer between the main pipe 13 and the heat dissipation fins 8 is reduced, and the heat exchange efficiency is further improved.

[0024] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A finned coil heat exchanger, characterized in that, It includes an outer coil (1), an inner coil (2) is provided inside the outer coil (1), and heat dissipation fins (8) are fixed on the outer walls of both the outer coil (1) and the inner coil (2). A connecting pipe (4) is connected to the top of the inner coil (2), and a connecting pipe (3) is connected to the top of the outer coil (1). A connector (5) is connected between the connecting pipe (4) and the connecting pipe (3).

2. The finned coil heat exchanger according to claim 1, characterized in that, Both the outer coil (1) and the inner coil (2) are spiral-shaped, and the bottom ends of the outer coil (1) and the inner coil (2) are respectively connected to the inlet pipe two (7) and the inlet pipe one (6).

3. The finned coil heat exchanger according to claim 1, characterized in that, Both the outer coil (1) and the inner coil (2) include a main tube (13), and the heat dissipation fins (8) are fixed to the outside of the main tube (13).

4. The finned coil heat exchanger according to claim 3, characterized in that, The inner wall of the main tube (13) is provided with a protective layer (11), and the cross-section of the main tube (13) is circular.

5. The finned coil heat exchanger according to claim 1, characterized in that, Welding ring one (9) and welding ring two (10) are respectively provided on both sides of the heat dissipation fins (8), and welding ring one (9) and welding ring two (10) are located on the outer wall of the main tube (13).

6. The finned coil heat exchanger according to claim 1, characterized in that, A heat dissipation gap (12) is reserved between two adjacent heat dissipation fins (8).

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